147 lines
3.7 KiB
PHP
147 lines
3.7 KiB
PHP
<?php
|
|
/*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* This software consists of voluntary contributions made by many individuals
|
|
* and is licensed under the MIT license. For more information, see
|
|
* <http://www.doctrine-project.org>.
|
|
*/
|
|
|
|
namespace Doctrine\Common\Cache;
|
|
|
|
/**
|
|
* Cache provider that allows to easily chain multiple cache providers
|
|
*
|
|
* @author Michaël Gallego <mic.gallego@gmail.com>
|
|
*/
|
|
class ChainCache extends CacheProvider
|
|
{
|
|
/**
|
|
* @var CacheProvider[]
|
|
*/
|
|
private $cacheProviders = array();
|
|
|
|
/**
|
|
* Constructor
|
|
*
|
|
* @param CacheProvider[] $cacheProviders
|
|
*/
|
|
public function __construct($cacheProviders = array())
|
|
{
|
|
$this->cacheProviders = $cacheProviders;
|
|
}
|
|
|
|
/**
|
|
* {@inheritDoc}
|
|
*/
|
|
public function setNamespace($namespace)
|
|
{
|
|
parent::setNamespace($namespace);
|
|
|
|
foreach ($this->cacheProviders as $cacheProvider) {
|
|
$cacheProvider->setNamespace($namespace);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* {@inheritDoc}
|
|
*/
|
|
protected function doFetch($id)
|
|
{
|
|
foreach ($this->cacheProviders as $key => $cacheProvider) {
|
|
if ($cacheProvider->doContains($id)) {
|
|
$value = $cacheProvider->doFetch($id);
|
|
|
|
// We populate all the previous cache layers (that are assumed to be faster)
|
|
for ($subKey = $key - 1 ; $subKey >= 0 ; $subKey--) {
|
|
$this->cacheProviders[$subKey]->doSave($id, $value);
|
|
}
|
|
|
|
return $value;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* {@inheritDoc}
|
|
*/
|
|
protected function doContains($id)
|
|
{
|
|
foreach ($this->cacheProviders as $cacheProvider) {
|
|
if ($cacheProvider->doContains($id)) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* {@inheritDoc}
|
|
*/
|
|
protected function doSave($id, $data, $lifeTime = 0)
|
|
{
|
|
$stored = true;
|
|
|
|
foreach ($this->cacheProviders as $cacheProvider) {
|
|
$stored = $cacheProvider->doSave($id, $data, $lifeTime) && $stored;
|
|
}
|
|
|
|
return $stored;
|
|
}
|
|
|
|
/**
|
|
* {@inheritDoc}
|
|
*/
|
|
protected function doDelete($id)
|
|
{
|
|
$deleted = true;
|
|
|
|
foreach ($this->cacheProviders as $cacheProvider) {
|
|
$deleted = $cacheProvider->doDelete($id) && $deleted;
|
|
}
|
|
|
|
return $deleted;
|
|
}
|
|
|
|
/**
|
|
* {@inheritDoc}
|
|
*/
|
|
protected function doFlush()
|
|
{
|
|
$flushed = true;
|
|
|
|
foreach ($this->cacheProviders as $cacheProvider) {
|
|
$flushed = $cacheProvider->doFlush() && $flushed;
|
|
}
|
|
|
|
return $flushed;
|
|
}
|
|
|
|
/**
|
|
* {@inheritDoc}
|
|
*/
|
|
protected function doGetStats()
|
|
{
|
|
// We return all the stats from all adapters
|
|
$stats = array();
|
|
|
|
foreach ($this->cacheProviders as $cacheProvider) {
|
|
$stats[] = $cacheProvider->doGetStats();
|
|
}
|
|
|
|
return $stats;
|
|
}
|
|
}
|